<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<h3>人的对象动态添加属性</h3>
		<script>
			var person={
				firstname:"陈",
				lastname:"子数",
				age:20,	
		fullName1:function(){
			//函数不能直接访问对象属性 加this关键字
		return	this.firstname+this.lastname;
		}		
			}
			console.log(person)
			console.log(person.firstname)
			console.log(person.age)	
			
			console.log(person.fullName1())
	// 动态添加
		person.address="西安"
		person.fullName2=function(){
return
person.firstname+person.lastname+","+person.age;
		}
		console.log(person)
		console.log(person.fullName2())
		
		</script>
	</body>
</html>



